Updating a device to iOS 11.2 breaks support with Xcode 9.1

Question

I tried to run my app on a device running iOS 11.2 and received the following error:

Could not locate device supported files.

Answer 1

I have Xcode9.2 on my MacBook and 8 on my MacMini. So I just copied the 11.2 DeviceSupport DeveloperDiskImage .dmg and .signature from the MacBook to the MacMini. Worked fine.